Παραπομπή σε μορφή APA (7η εκδ.)

World Tourism Organization. (1996). What tourism managers need to know: A practical guide to the development and use of indicators of sustainable tourism. World Tourism Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Tourism Organization. What Tourism Managers Need to Know: A Practical Guide to the Development and Use of Indicators of Sustainable Tourism. Madrid: World Tourism Organization, 1996.

Παραπομπή σε μορφή MLA (8th εκδ.)

World Tourism Organization. What Tourism Managers Need to Know: A Practical Guide to the Development and Use of Indicators of Sustainable Tourism. World Tourism Organization, 1996.